By using a thin convex lens, you project the image of an object through the lens onto a screen to build up a dataset of multiple object and images distances,
You then plot a graph of on the y-axis and on the x-axis.
Select all of the answers that correctly apply to the graph and subsequent analysis.
ans
The focal length is the y-intercept.
The graph will be a straight line with a positive gradient.
The gradient of the line is the focal length.
The image can be either real or virtual in order to build up a dataset using this method.
The graph will be a curved line.
The gradient of the line is -1.
The graph will be a straight line through the origin.
The gradient of the line is 1.
The graph will be a straight line with a negative gradient.
The image must be real in order to build up this data set.
The y-intercept and x-intercept should be equal.
The focal length is the inverse of the y-intercept.